I also wonder whether Ennis had ever been into a bar before. Methodists were't - maybe still aren't - keen on the demon drink. (My mother was a Methodist; she and her sisters signed the pledge before they weer in their teens, and none of the three was ever very keen on alcohol ever after, though in later life all three would have a drink on special occaions.) If Jack had been rodeoing, he'd have been in bars with other rodeo cowboys, presumably; anyway, Jack always seems more experienced in the ways of the world than Ennis.And he appears to have more money - could have been an issue for Ennis?